66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
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//
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// SPDX-License-Identifier: BSD-3-Clause
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// Copyright (c) Contributors to the OpenEXR Project.
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//
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#ifndef INCLUDED_IEXTHROWERRNOEXC_H
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#define INCLUDED_IEXTHROWERRNOEXC_H
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//----------------------------------------------------------
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//
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// A function which throws ExcErrno exceptions
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//
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//----------------------------------------------------------
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#include "IexBaseExc.h"
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#include "IexExport.h"
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IEX_INTERNAL_NAMESPACE_HEADER_ENTER
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//--------------------------------------------------------------------------
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//
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// Function throwErrnoExc() throws an exception which corresponds to
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// error code errnum. The exception text is initialized with a copy
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// of the string passed to throwErrnoExc(), where all occurrences of
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// "%T" have been replaced with the output of strerror(oserror()).
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//
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// Example:
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//
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// If opening file /tmp/output failed with an ENOENT error code,
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// calling
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//
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// throwErrnoExc ();
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//
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// or
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//
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// throwErrnoExc ("%T.");
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//
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// will throw an EnoentExc whose text reads
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//
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// No such file or directory.
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//
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// More detailed messages can be assembled using stringstreams:
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//
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// std::stringstream s;
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// s << "Cannot open file " << name << " (%T).";
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// throwErrnoExc (s);
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//
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// The resulting exception contains the following text:
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//
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// Cannot open file /tmp/output (No such file or directory).
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//
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// Alternatively, you may want to use the THROW_ERRNO macro defined
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// in IexMacros.h:
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//
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// THROW_ERRNO ("Cannot open file " << name << " (%T).")
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//
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//--------------------------------------------------------------------------
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IEX_EXPORT void throwErrnoExc (const std::string& txt, int errnum);
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IEX_EXPORT void throwErrnoExc (const std::string& txt);
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IEX_EXPORT void throwErrnoExc ();
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IEX_INTERNAL_NAMESPACE_HEADER_EXIT
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#endif // INCLUDED_IEXTHROWERRNOEXC_H
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